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Definitions

bacteria

[bak-teer-ee-uh] / bækˈtɪər i ə /
NOUN
microorganisms
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Investigators eventually suspected that the bacteria were airborne and had infected people after contaminating the air conditioning system at the convention hotel.

From Los Angeles Times • May 18, 2026

High levels of Legionella bacteria were found in a cooling tower at Embassy Suites Napa Valley, though none of the patients had visited the hotel.

From Los Angeles Times • May 18, 2026

Root canal treatment works by removing infected tissue inside the tooth and sealing the area to prevent bacteria and toxins from spreading into surrounding tissues.

From Science Daily • May 16, 2026

Small amounts of salt in food can help preserve it by preventing bacteria from growing.

From BBC • May 15, 2026

James Garfield had been attacked first by Guiteau and then by bacteria.

From "Ambushed!" by Gail Jarrow




Vocabulary lists containing bacteria


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